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John Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · King-County, Washington
Our Model Tree links this John Olson across the 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 10-person household.
Age 19
b. ~1921
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Olson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Harding Pre |
| 1935 Residence (County) | King |
| Additional Details | |
| Highest Grade | Hs 3 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Harding Pre |
| Est. Birth Year | ~1921 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Corrine Olson | Daughter | — | 12 | ~1928 |
| Helen Olson | Daughter | — | 20 | ~1920 |
| Thelma Olson | Daughter | — | 14 | ~1926 |
| Clara Olson | Daughter | — | 18 | ~1922 |
| Sue Olson | Daughter | — | 23 | ~1917 |
| Hans Olson | Head | — | 60 | ~1880 |
| Bud Olson | Son | — | 16 | ~1924 |
| John Olson | Son | — | 19 | ~1921 |
| Hans Olson | Son | — | 22 | ~1918 |
| Carrie Olson | Spouse | — | 53 | ~1887 |
Census Appearances
1930
King, Washington
Son, age 9
King, Washington · implied b. ~1921 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | John N |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 19
King-County, Washington · implied b. ~1921 — 10 household members
| Surname | Olson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Harding Pre |
| 1935 Residence (County) | King |
| Highest Grade | Hs 3 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Olson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Olson
Son · 1940 · age 19 · b. ~1921 · Washington
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Sibling
Bud Olson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Olson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hans Olson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Olson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Corrine Olson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sue Olson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Olson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04344-00522)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mabel Olson | 12 | Neice | — | Washington |
| 2 | James Johnson | 71 | Head | Gas Station | Minnesota |
| 3 | Bolson Salyer | 62 | Head | Car Inspector | Kentucky |
| 4 | Hilda Salyer | 62 | Wife | — | Sweden |
| 5 | Augusta Smith | 57 | Head | Cook | Oregon |
| 6 | Irene Winkelmans | 23 | Hired girl | Waitress | Oregon |
| 7 | David Ostlund | 52 | Head | Mill Worker | Sweden |
| 8 | Lettie Ostlund | 52 | Wife | — | Minnesota |
| 9 | Hanley Rebholz | 35 | Head | Mill Worker | Washington |
| 10 | Sally Rebholz | 35 | Wife | — | Washington |
| 11 | Gary Rebholz | 1 | Son | — | Washington |
| 12 | Letty Rebholz | 0 | Daughter | — | Washington |
| 13 | Lawrence Cooke | 34 | Head | Bank Clerk | Montana |
| 14 | Mildred Cooke | 37 | Wife | Decorator | Wisconsin |
| 15 | Hans Olson | 60 | Head | Retired Farmer | Norway |
| 16 | Carrie Olson | 53 | Wife | — | Norway |
| 17 | Sue Olson | 23 | Daughter | New Worker | Washington |
| 18 | Hans Jr. Olson | 22 | Son | — | Washington |
| 19 | Helen Olson | 20 | Daughter | Typist | Washington |
| 20 | John Olson THIS PERSON | 19 | Son | — | Washington |
| 21 | Clara Olson | 18 | Daughter | — | Washington |
| 22 | Bud Olson | 16 | Son | — | Washington |
| 23 | Thelma Olson | 14 | Daughter | — | Washington |
| 24 | Corrine Olson | 12 | Daughter | — | Washington |
| 25 | Hans Lytte | 32 | Head | Fisherman | Norway |
| 26 | Thelma Lytte | 22 | Wife | — | Washington |
| 27 | Robert Reed | 70 | Head | Lumberman | New Brunswick |
| 28 | Katherine Hood | 37 | Niece | Housekeeper | Washington |
| 29 | Orlin Glenn | 36 | Head | Cannery Supt | Kansas |
| 30 | Gladys Glenn | 31 | Wife | Cannery | Missouri |
| 31 | Joyce Glenn | 10 | Daughter | — | Washington |
| 32 | James Glenn | 27 | Head | School Bus Driver | Missouri |
| 33 | Barbara Glenn | 22 | Wife | Folder | Washington |
| 34 | John Glenn | 63 | Head | Bus Driver | Kansas |
| 35 | Lillian Glenn | 57 | Wife | — | Kansas |
| 36 | Joe Showpin | 24 | Head | Machinist | Canada |
| 37 | Ella Showpin | 20 | Wife | — | Colorado |
| 38 | Francis Mae Showpin | 1 | Daughter | — | Washington |
| 39 | Fred Matz | 80 | Head | — | Germany |
| 40 | Fred Newcomb | 51 | Head | Painter | New York |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)